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Devil is in the details, e.g. in all processors or optional? Can hardware owners set root keys? How will enclaves interact with client Hyper-v, Yosemite OS X hypervisor, html5 drm, open-source virtualization & crypto, etc.

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Protecting content from users is a failed game. This kind of protection is useless. At the very least, they need to decrypt information before it passed through our eyes and ears - that's the weak link in the chain.

Useless or not, it could impact x86 operating systems and would benefit from developer feedback prior to shipment of microcode in new processors.

Oculus will make it more difficult to photograph the screen.

I think the weak link in the chain is only after decryption, but before uncompression (for lossy formats, so books excluded). See, for example, [1] and [2], where the authors look at randomness and entropy measures of I/O to find where the decrypted-but-compressed buffers are.

[1] http://moyix.blogspot.de/2014/07/breaking-spotify-drm-with-p...

[2] https://www.usenix.org/node/182951

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